A tour bus at about 10:30 a.m. lost control on snow and ice on the westbound lanes of Interstate 84 near milepost 227 near Deadman Pass, a few miles from the top of Cabbage Hill. The bus crashed through a guardrail and plunged down a cliff. State police reported about 40 people were on the bus, but the agency did not identify the bus company or say where the group was traveling from or to.